142 entries under sound topic. ×
| even(verb, adjective, calm, strong) | |
| fit(adjective, strong, hard, complete) | |
| forcible(adjective, clear, strong, tough) | |
| grave(sober, serious, knowledgeable, cultured) | |
| heavy-duty(adjective, strong, tough, heavy) | |
| judicious(adjective, close, correct, exact) | |
| lawful(good, right, reasonable, rational) | |
| legal(good, right, reasonable, proper) | |
| perpetual(familiar, whole, continuous, established) | |
| proven(reasonable, proper, rational, accepted) | |
| reinforced(adjective, strong, tough, heavy) | |
| right(adjective, good, complete, smooth) | |
| sinewy(adjective, strong, hard, tough) | |
| tenacious(adjective, strong, secure, tough) | |
| unimpaired(verb, adjective, complete, perfect) | |
| hard as nails(expression, adjective, idiom, set, strong) | |
| able(adjective, strong, tough, easy) | |
| abstruse(knowledgeable, cultured, educated, erudite) | |
| academic(knowledgeable, cultured, educated, erudite) | |
| capable(adjective, strong, tough, fit) |
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| APA | Smart Define. (2016). solid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/solid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "solid thesaurus" https://smartdefine.org/solid/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, solid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/solid/thesaurus/synonyms>. |
| MLA | Smart Define. "solid thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/solid/thesaurus/synonyms> |